Plumb the correct owner document through DocumentInit::m_owner.

chrome/browser/extensions/api/tabs/ash_panel_contents.h

Index: chrome/browser/extensions/api/tabs/ash_panel_contents.h
diff --git a/chrome/browser/extensions/api/tabs/ash_panel_contents.h b/chrome/browser/extensions/api/tabs/ash_panel_contents.h
index e137962a8943558931bcca70c55455a8fe051ab8..e789e501327e7a1c0fa10c3d5e63ddde4c249eb2 100644
--- a/chrome/browser/extensions/api/tabs/ash_panel_contents.h
+++ b/chrome/browser/extensions/api/tabs/ash_panel_contents.h
@@ -37,7 +37,9 @@ class AshPanelContents
   ~AshPanelContents() override;
 
   // extensions::AppWindowContents
-  void Initialize(content::BrowserContext* context, const GURL& url) override;
+  void Initialize(content::BrowserContext* context,
+                  content::RenderFrameHost* creator_frame,
+                  const GURL& url) override;
   void LoadContents(int32_t creator_process_id) override;
   void NativeWindowChanged(
       extensions::NativeAppWindow* native_app_window) override;